NASA's New Horizons mission will help us understand worlds at the planetary frontier by making the first reconnaissance of Pluto and by venturing deeper into the distant, mysterious Kuiper Belt -- a relic of solar system formation.

The New Horizons spacecraft -- built and operated at the Johns Hopkins Applied Physics Laboratory in Laurel, Maryland -- launched on Jan. 19, 2006. It swung past Jupiter for a gravity boost in February 2007, and will fly through the Pluto system on July 14, 2015. The countdown is on . . .

For more on the mission, visit http://pluto.jhuapl.edu